Wireworking machine



June 117 1924; 1,497,65

B. L. VAN ORMAN WIREWORKING MACHINE Filed March 26. 1923 8 Sheets-Sheet1 INVENTOR Ber? L. Van Q/man MW/KM ATTORNEYS Jame 11'? i924- 3,4973%5 B.-L. VAN ORMAN WIREWORKING MACHINE Filed March 26, 1925' a Sheets-Sheet 2j INVENTOR Ber? L. Mm Orman ATTORNEYS June 17 1924,

WIREWORKING MACHINE Filed Niarch 26, 1923 8 Sheets-Sheet 3 v 103 F.INVENTOR as 9 fierf' L. Van Orman June 17 1 B. L. VAN ORMAN WIREWORKINGMACHINE 8 Shets-Sheet 6 I Filed March 26.

v 1,497,965 a. L. VAN ORMAN L W IREWORKING MACHINE June 17 1924.

Filed March 26, 1923 8 Sheets-Sheet '7 20 I 7 I INVENTOR Ber) A. VanOrman 21 11 232 -QZW E-X Y 23 ATTORNEYS June 17 1 924.

B. VAN ORMAN wmmwonxme momma Filed March 26, 1923 a Sheets-Sheet avllllll W l'lHll 1;

INVENTOR Bert A. Van Orman Patented dune 1?, 1924.

,TATES PATENT OFFICE.

BET L. VAN ORMAN, 0F HIGHLAND PARK, MICHIGAN, ASSIGNOR TO L. A. YOUNGINDUSTRIES, INC., 0F DETROIT, MICHIGAN.

wmnwonn'me momma.

Application filed March 26, 1923. Serial No. 627,763.

To all whom it may concern:

Be it known that I, Ben L. VAN ORMAN, a citizen of the United States,residing at Highland Park, county'of Wayne, State of Michigan, haveinvented certain new and usefulImprovements in Wirewcrking Machines, ofwhich the following is a specification.

This invention relates to improvements in wire working machines.

In the use of tension springs, it is necessary that the ends be shapedto some form.

that will permit the sprlng to be hooked or otherwise attached to theparts acted upon.

This invention relates particularly to a machine for forming the end ofa coiled spring into a suitable hook which shall be in alignmentlongitudinally with the center of the coils. The accomplishment of thisresult requires several distinct movements or operations which, previousto the development of my present machine, were done by separate devices.

The main objects of this invention are:

First, to provide a machine adapted to form a complete centrally alignedhook end on a coiled spring by means of a single machine, therebyeliminating the time and labor necessary to change from one operation toanother. a

Second, to provide a machine adapted to produce a unlform product byholding the spring firmly in position during all of the successiveoperations, thus assuring accurate application of the differentmovements.

Third, to provide a machine capable of being easily adapted to theforming of different types of spring ends.

Fourth, to provide a machine that may easily be adapted to operate uponsprings coiled either right or left hand.

Fifth, to provide a machine of, the class described which may be easilyadjusted or repaired and which may be so constructed as to be strongenoughto withstand considerable use. I

Further objects, and objectsrelating to structural details, willdefinitely appear from the detailed description, to follow.

A structure which is a preferredembodipartially in front elevation andpartlally in transverse section on a line corresponding to line H ofFig. I.

Fig. V, Sheet 4, is a View in vertical longitudinal section on a linecorresponding to line 55 of Fig. I, showing a coiled spring in positionto be operated upon by the machine.

Fig. VI, Sheet 4, is a view corresponding to Flg. V, but with parts inactuated position.

Fig. VII, Sheet 5, is a view in horizontal section on a linecorresponding to line 77 of Fig. V.

Fig. VIII, Sheet 6, is a viewin horizontal section on a linecorresponding to line 88 of Fig. V.

Fig. IX, Sheet 6, is a detail view in longi tudinal section on a linecorresponding to line 99 of Fig. VIII.

Fig. X, Sheet 7 is an enlarged view in section on a line correspondingto line 1010 of Fig. I, illustrating details of a clutch for connectingthe machine with a source of power.

Fig. XI, Sheet 7, is a View partially in section on a line correspondingto line 11- 1 1 of Fig. X.

Fig. XII, Sheet 7, is a detail view partially in section on a linecorresponding to line 1212 of Fi XI, showing further details of theclutc Fig. XIII, Sheet 7, isa view in detail similar to Fig. XII,showing the driven clutch dog in operative position. I

Fig. XIV, Sheet 7, is a detail view' in section on a line correspondingto line 14-44 of-Fig. XIII, but showing the releasing member in positionto disengage the driven clutch'dog.

line -15 of Fig. XIV.

Fig. XIX, Sheet 3, is an enlarged detail view in section on a linecorresponding to line 1919 of Fig. VIII, showing a spring clamped in theholder and a forming die in position to begin the first operation uponthe sprin Fi XX, Sheet 3, is a detail view similar to Flg. XIX showingcompletion of the first operation.

' base or bed 1 resting u Fig. XXI, Sheet 5, is an enlarged frag--mentary view similar to a portion of Fig. VIII, showing the positionoccupied b the parts at the completion of the secon operation.

Fig. XXII, Sheet 5, is a detail vertical section taken on a linecorresponding to line 2222 of Fig. XXI.

Fig. XXIII, Sheet 6, is a detail view similar to Fig. XXII showing theposition of the parts at the completion of the third 0 eration.

Fig. XIV, Sheet 6, is a detail view in section on a line correspondingto line 24- 2t of Fig. XXIII.

Fig. XXV, Sheet 8, is a detail view similar to Fig. XXIII, showing theposition of the parts at completion of the fourth operation.

Fig. XXVI, Sheet 8, is a detail view in section on a line correspondingto line 26--26 of Fig. XXV.

Fig. XXVII, Sheet 8, is an enlarged perspective view of a completedspring end.

, 'Fi XXVIII, Sheet 8. is a view similar to Fig. XXVI, showing changesin position or form of parts necessary to adapt the machine foroperation upon springs coiled left hand,

. Fig. XXIX, Sheet 8, is a perspective view of a modified form ofspring'end.

.Fi XXX, Sheet -.8, is a view similar to Fig. XVI, showing the form ofparts necessary to shape the springyend illustrated in Fig. XXIX In thedrawings, similar reference characters refer to similar parts throughoutthe several views and the sectional views are taken looking in thedirection indicated by the little arrows at the ends of the sectionlines.

Referring to the drawing, a main frame V on a suitable ped-'estalflprovides support or side frame members 3 and 4. A driven shaft5, which is journaled in suitable bearings in the members 3 and 4.,imparts motion to the several mechanisms which constitute the working.parts of the machine. The shaft 5 carries a gear 6 which meshes with apinion 7 secured to a drive shaft 8 which is supported by bearingbrackets 9, the gear ratio preferably being such that severalrevolutions of the drive shaft are required to cause a single revolutionof the I driven shaft 5.

The embodiment of my invention illustrated is designed to beintermittently actuated. The actuating means comprises a pulley 10 whichis normally free to rotate on the drive shaft 8, being connected toasource of power by a belt 12.' The pulley 10 is connected with the driveshaft 8 by a clutch consisting of a pawl or dog 13 lying in alongitudinally disposed groove-like way 14, which is formed inenlargements 15 and 16 on the drive'shaft-see Figs. X to XIV inclusive.The dog 13 is retained in the way 14 by a ring 17 and cap 18 on theenlargements 15 and 16 respectively which are shrunk upon or otherwisefirmly secured thereto. The dog 13 is urged toward the pulley 10 by acompression spring 20 which lies in a recess in the dog and is supportedby the cap 18. The dog 13 is held normally in retracted position by thereleasing mem ber 21 which engages a slot 22 in the dogsee Figs. XI andXII.

The releasing member 21 is carried by a rock arm 23 pivoted on a rod 24supported by brackets 25. The rock arm 23 is connected. by a link 26 toone end of a lever 27 which is pivoted at 28 to the main frame and has asuitable pedal 29 positioned to be conveniently reachedby theoperator,see Fig. II. The pedal is normally held upward bythe spring 30which has one end attached to the secured to the frame, thereby normallyholding the releasing member in contact with the dog 13. When the pedal29 is depressed the releasing member 21 is disengaged, allowing thespring 20 to project the dog'13 into range of driving pins 32 which aresecured in the hub 11 of the pulley 10see Figs. XIII and XV. The dog isengaged by one of the pins 32 causing the drive shaft 8 to rotate withthe pulley 10 and throwing the machine into action.

As soon as the clutch is engaged the operator releases the pedal 29, butthe releasing member 21 is prevented from immediately disengaging theclutch by means of a roller 33mounted on an extension of the rock arm23, to coact with a disc34 secured to the driven shaft 5-see Figs. VIand X. When the shaft 5 has completed a revolution, the

roller 33 passes into a depression 35 in the periphery of the disc 34permitting the relever 27 and the other end leasing member to swingintoposition to dis- '38 in contact with the cap 18-see Fig.

XVI. Any desired pressure is applied by a spring 39 in compressionbetween one of the bands 38'and a collar 40 on a spring keeper 41 whichis held in place in the brake hands by an adjusting nut 42. To preventrotation of the brake, it is provided with a forked extension 43engaging the shaft 5-see Fig. XVI.

The machine illustrated is designed to receive springs 50 (the work)formed with an extension 44 at each end substantially as shown in Fig.XVII, there being a suflicient amount of uneoiled wire 44 left to formthe hooksshown in Fig. .XXVII.

The work 50 is held in position in the machine by a block-like workholder 45- see Fig. XVIII-having a seat 46 adapted to receive the -work,the seat preferably having thread-like spirally disposed grooves adaptedto receive the coils of the particular spring te be operated upon. Thegrooves assist in holding the spring firmly in position. The work holder45 is removable, it

being held in position iii a groove 47 in the frame bed 1 by a screw48see Fig. VI.

With the springs in position in the machine, see Figs. V, VI and VIII,the operator operates the pedal 29 which allows the clutch described toengage, thereby drivin the main shaft 5v in the direction indicate bythe arrow 51. v

A cam 52 on the shaft 5 first engages a roller 53 on the rock lever 54pivoted on the supporting shaft 55. The other end of the rock lever isforked at 57 to embrace the plunger head 59, the arms of the fork beinslotted to engage the pins 58 projecting cm the sides of the head 59.

The plate-like extension centering plunger 60 is secured to the head sothat it is reciprocated as the rocker arm of the lever 54 is actuated,the plunger being supported in the vertical 'uldes 61 carried by theframe cross member 62. 'The plunger carries a clamping member having astem 64 slidabl engaging a longitudinal bore in the three ed-supportinmember 63 carried by the head .59. The c amging member 65 islongitudinally slotted an supported for reciprocating movement on theplunger by means of the stud 66 engaging the slot 67 see Fig. V.

The coiled spring 68 acts upon the clamping member to normally hold itin its lower position on the plunger 60, the spring resting upon theshoulder'69 of the clampin member and its upper end being engaged by thelower end of the supporting and spring adjusting member 63-see Figs. Vand XIX. The member 63 is secured in its adjusted position by means ofthe clamping 'work under tension of the spring 68, the

connections just described permitting the plunger to continue itsdownward movement after such engagement of the work clamp. The plunger60 is designed to engage the end coil of the spring 50 and press it downupon the work holder 45, leaving the extension 44 extendingdiametrically across the coil,see Figs. XIX and XX. This completesthe-first or extension centering operation. I I preferably provide meansfor accurately determining the stroke of the plunger 60. This, in thestructure illustrated, I accomplish by providing the supporting shaft 55on which the rock lever 54 is mounted with eccentric pins 73 restinbearing-like supports in the frame mem ers- 3 and 4, the shaft 55 beingnormally held from turning by clamping the caps 74 and 75 thereon. Byloosening these caps and turning the shaft by means of the collar 76secured to the shaft, the position of the pivot center of the lever 54may, dueto the eccentricity of the pins 73, be adjusted. After thisfirst or centering operation has been performed by means of the plunger60, the cam 52 next engages a roller 78 carried by a lever 7 9- ivotedat 80. This lever 7 9' has downward y extending arms 81 en-.

gaging the slide members 82 and 83 supported in groove-like ways in theframe bed 1. 'Each slide member has a shoulder 84 positioned to coactwith one of the arms or the lower end of the lever 79. These shoulders84 are formed by the ends of the adjustable members 86 which areadjustably secured to the slides by the adjusting screw or bolt 87 andthe clamping screw 88,

the adjustable sections 86.

thef'sorew extending through the slot 89. in

i The slides 82 and 83 are retracted by the springs 90 which are securedto the frame at 91 and connected at their forward ends to a cross bar 92bearing against pins 93 on the adjustable members 86 of the slides -seeFig. VIII. The limit of forward movement of each slide is determined byan adjustable stop screw 94-engaging a stop compensate for the tendencyof the spring"- block 95 on the bed of the machine. By adjusting theslide members 86 and the-stop screws 94, any desired range. of movementof the slides may be obtained.

Former members 96 are slidably mounted in the groove-like ways 97- inwhich they are retained by the overhanging frame member 98 whichoverlies the slide 83. These ways are disposed diagonall relative to thepath of the slides. A rol er 99 carried by the pin 100 on the slideengages the lateral groove 101 in the lower surface of the member96 sothat when the slide 83 is reciprocated as described, the former block isactuated-see Fig. XIX. There is one of thesemechanisms for each slide'82 and 83. As these are duplicated, I confine my description to one- Theformer member 96 is provided with a tappet or finger 102 which engagesthe extension 44 of the spring 50 with a wiping action, bending it tothe position shown in Fig. XXI, a former block 103 being provided on thework holder so that the end 44 is bent around the same. The shape andposition of this former block determines the bend in the extension 44.The bending of the extension 7 44 to the position shown in Fig. XXIconstitutes the second operation in the forming of the hook.

I desire to mention .at this point that while being acted upon by the'machine,'the spring is preferably positioned at an angle to thelongitudinal center line of the ma chine so that the end 44 is bentslightly in excess of the amount of the bend of the completed hookdesired at this point. This is to wire to return to its originalposition, thus leaving the hook substantially parallel with the centerline of the spring when the spring 'is removed from the machine.

The next or third operation is to cut off any surplus stock on thespring extension 44. When the extension 44 is bent to the position shownin Fig. XXI, it overlies a block-like supporting and shear member 105which is secured in the groove 47 of the bed or frame by means of thescrew 106, the screw passing through a slot-like hole permittinglongitudinal adjustment of the block 105-see Fig. V. This head block 105also I constitutes a shear block.

V and XXII. The blade 107 is mounted on i the vertically reciprocatingcarriage 109 supported in the ways 110 of the bracket 112. This bracket112 is adj ustably secured in the groove 47 of the bed or base 1 bymeans of file screw 113 disposed through the elongated hole 114 therebypermitting the adjustment of the bracket.

The carriage 109 is actuated by the bell crank lever 115 pivoted at 116on the bracket 112. One end 117 of this lever 115 is formed to engage anopening 118 in the carriage 109. The other end of the lever 115 isconnected by the adjustable link 119 to a lever 120 pivoted at 121 andcarrying a roller 122 adapted to be engaged by the cam 52. The cam 52engages this-roller 122 after the cam has acted upon the lever 79described and actuates the carriage to cut off the sprin extension'tothe proper length',see Figs. VI, XIII and XXIV. I I

The carriage 109 is normally held in elevated position by the springs123 attached to the pin 124 connecting the link 119 to the clever 115,the otherends of the link being riage 109.carries the mechanism forbendingthe end of the spring extension into the form of a hook. Thismechanism comprises the vertically disposed spindle 126 having apinion'127 on its upper end meshing with the rack 128 mounted on thecarriage for reciprocation transversely ofthe s indle 126.

The spindle 126 is provi ed with a head 130 at its lower end carryingdownwardly projecting pins 131 and 132, the pin 131 being centrallydisposed relative to the axis of the spindle 126while the pin 132 islocated eccentrically relative thereto. The member 105 is provided withahole 131 ada ted to receive the end of the pin 131 when t e carriage/isin actuated position.

When the carriage 109 is actuated, the wire is cut ofi and the head 130is positioned so that the pins 131 and 132 .engage on opposite sides ofthe wire-see Figs. XXI I and XXIV. v

The rack 128 is'actuated by the tappet rod 133 which is mounted in theframe member 3 and is urged against the bracket 112 by the coiled spring129, thereby normally holding the rack. 112 to the right and the head130 so'that its pin 132 is in proper position to engage the wire.

After the carriage has been lowered to engage the pins 131 and 132 withthe sprin extension, t e rack 128 is actuated towarcI the left by thetappet rod 134 which is actuated by the lever 135-see Fig. I, the leverbeing pivoted in the bracket 136. and having a rollerforming the hook.As the shaft completes its revolution, each of the actuating membersreturns to initial position so that when the hook is completely formedthe spring 50 is released and may be reversed to form the hook on itsother end, the springs being manually placed in the work holder, in theembodiment illustrated. i i

The spindle is actuated prior to the retracting of the former slidev sothat the work is securely held during this hook forming operation. I

In the foregoing description, I'have described the operation of themachine upon right-hand coiled springs. The machine is readily adaptedand operates equally as well on left-hand coiled springs by thereplacing of certain parts appropriately formed for left-hand work andchanging the position of other parts,for instance, a left-hand springroller 45' replaces the holder 45 and a left-hand former block 96corresponding to the former block 96 is placed in the left diagonalgroove 97', the roller 99 being placed on the pin 100 on the left-handslide member 82-see Fig. XXVIII. The out 01f knife 97is reversed so thatit faces the left.

The position of the tappet rods 133 and 134 is reversed, the forminghead being positioned so that the pin 132 dropsdown on the left-handside of the spring extension 44.

The cam lever 35 is changed to the bracket 136 on the left-hand side ofthe machine and coacts with the cam 138' carried by the gear 6,, the cambeing timed to correspond with the cam138; The actuation of the rack 128from the left rotates the head 130 in proper direction tobend theextension 44 to the right, as shown in Fig. XXVIII.

By variations in-the formingmember and in the adjustment. other typesand proportionsof hooks and parts of wire may b formed by this machine.

Fig. XXIX illustrates a. modification in which the hook is substantiallythe whole width of the spring. This form. of hook is produced byextending the form block 103 around which the extension 44 is bent inthe second operation and enlarging the center pin 131, the location ofthe pin 132 being correspondingly changedsee Fig. XXX.

I have not attempted to'illustrate or describe certain othermodifications or adapts? tions which I contemplate to adapt my machineto other formsof workas I believe the disclosure made will enable thoseskilled in the art to which my invention relates to embody or adapt myimprovements as may be. desired.

Having thus described my invention, What I claim as new and desire tosecure by Letters Patent, is:

1. Ina structure of the class described, the combination of a workholder adapted to receive a spring having an end extension, said holder,being provided With a former block at the-end of the seat, a supportmember disposed at the end of said work holder,

the rear edge of said support member constituting a shear member, avertically reciprocating centering forming plunger for the springextension adapted to engage the first coil of a spring arranged in thework holder, a work clamp yieldingly mounted on said plunger to clampthe work prior to the operation of said plunger thereon, a former memberadapted to bend the spring extension around'said former block on saidwork holder and across said support member to a longitudinal positionrelative to the spring, a carriage mounted to reciprocate above saidsupport member, a blade on said carriage coacting with the shear portionof said support member, a forming spindle mounted on said carriage andprovided with a head having pins thereon, one of which is disposedcentrally relative to the axis ofthe spindle and the other eccentricallyrelative thereto, to engage the spring extension while supported by saidsupport memberso that upon the rotation of the spindle the extension isbent into a hook, means for actuating said spindle, and means foractuating said plunger, former member and carriage and said spindle,timed so that they are successively actuated, said spindle beingactuated prior to retracting of said former member and carriage.

.2. In a structure of the class described, the combination of a workholder adapted to receive a spring having an end extension, said holderbeing provided with a former block at the end of the seat, a supportmem-,

, ber disposed at the end of said work holder,

ran

like

- centrically relative thereto, to engage the spring extension whilesupported by said support member so that upon the rotation oi thespindle the extension is bent into a hook,

means for actuating said spindle, and means for actuating said plunger,former member and carriage and said spindle, timed so that they aresuccessively actuated, said spindle being actuated prior to retractingof said former member and carriage.

3. In a structure of the class described. the combination of a workholder adapted to receive a spring having an end extension. said holderbeing provided with a former block at the end of the seat, a supportmember disposed at the end of said work holder, the rear edge of saidsupport member constituting a shear member, a vertically reciprocatingcentering forming plunger for the spring extension adapted to engage thefirst coil of a spring arranged in the .work holder, a former memberadapted to bend the spring extension around said support member to alongitudinal position relative to the spring, a carnagemounted to mom--rocate above said support member, a blade on said carriagecoacting withthe shear portion of said support member, a forming spindle mounted onsaid carriage and provided with a head having pins thereon, one of whichis disposed centrally relative to the axis of the spindle and the othereccentrically relative thereto, to engage the spring extension whilesupported by said support member so that upon the rotation of thespindle the extension is bent .into a hook, means for actuating saidspindle, and means for actuating said plunger. former member andcarriage and said spindle, timed so that theyare successively actuated,said spindle being actuated prior to retracting of said former memberand carriage.

1 4. In a structure of the class described. the combination of a workholder adapted to receive a spring having an end extension, said holderbeing provided with a former block at the end of the seat, a supportmember disposed at the end of said work holder, a verticallyreciprocating centering forming plunger for the spring extension adaptedto engage the first coil of a spring arranged in the work holder, aformer member adapted to bend the spring extension around said formerblock on said work holder and across said support member to alongitudinal position relative to the spring, a carriage mounted toreciprocate above said suppoit member, a forming spindle mounted on saidcarriage and'provided with a head having pins thereon, one of which isdisposed centrally relative to the axis of the-spindle and Y the othereccentrically relative thereto,-it.o

engage the spring extension while supported by said support member sothat upon the rotation of the spindle the extension is bent retractingof said former member and carrlage. I

5. In a structure of the class described, the combination of a workholder adapted to receivea coiled spring having an end extension, saidholder being provided with a former block at the end of the spring, asupport member disposed at the end of said work holder, the rear edge ofsaid support member constituting a shear member, a centering plunger forsaid extension adapted to engage the coil of which said extension is acontinuation, means for bending such extension to a longitudinalposition relative to the spring, a carriage mounted to reciprocate abovesaid support member, a blade on said carriage coacting with the shearportion of said support member, a forming spindleprovided with pinspositioned to engage the spring extension on opposite sides thereof sothat on rotation of the spindle the extension is formed. into a hook, arack mounted on said carriage to reciprocate transversely of thespindle, a pinion on saidspindle coacting with said rack, a tappetmember for actuating said rack, and an opposed spring pressed tappetmember for returning said rack. said tappet members being provided withheads permitting movement of the rack transversely of the tappetmembers.

6. In a structure of the class described. the combination of a workholder adapted to receive a coiled spring having an end extension, saidholder being provided with a former block at the end of the spring, asupportmember disposed at the end of said work holder. a centeringplunger for said extension adapted to engage the .coilof which saidextension is a continuation, means for bending such extension to alongitudinal position relative to the spring, a carriage mounted toreciprocate above said support member, a forming spindle provided withpins positioned to engage the spring extension on opposite sides thereofso that on rotation of the spindle the extension is formed into a hook,a rack mounted on said carriage to reciprocate transversely of thespindle, a pinion on said spindle coacting with said rack, a tappetmember for actuating said rack, and an opposed spring pressed tappetmember for returning said rack, said tappet members being provided withheads permitting movement of the rack transversely of the tappetmembers.

"I. In a structure of the class described,

, ber, a blade on said carriage coacting with memes the combination of awork holder, a support member, a carriage mounted to reciprocate abovesaid support member, aforming spindle provided with pins positioned toengage the spring extension on opposite sides thereof so that onrotation of the spindle the extension is formed into a hook, a rackmounted on said carriage to reciprocate transversely of the spindle, apinion on said spindle coacting with said rack, a tappet member foractuating said rack, said tappet member being provided with a headpermitting movement of the rack transversely ofthe tappet member.

8. In a structure of the class described, the combination of a supportmember constituting a shear member, a carriage mounted to reciprocateabove said support member,- a blade on said carriage coacting with theshear portion of said support member, a forming spindle provided withpins positioned to engage the spring extension on opposite sides thereofso that on rotation of the spindle the extension'is formed into a hook,a rack mounted on said carriage to,

reciprocate transversely of ,the spindle, a pinion on said spindlecoacting with said rack, and means for actuating said rack.

9. In a structure of the class described, the combination of a Workholder adapted to receive a spring having an end extension, a supportmember disposed at the end of said work holder, a carriage mounted toreciprocate above said support member, a forming spindle provided withpins positioned to engage the spring extension on opposite sides thereofso that on rotation of the spindle the extension is formed into a hook,a rack mounted on said carriage to reciprocate transversely of thespindle, a pinion on said spindle coacting with said rack, and means foractuating said rack.

10. In a structure of the class described, the combination of a supportmember constituting a shearmember, a carriage mount ed to reciprocateabove said support memthe shear portion of said support member, aforming spindle provided with pins positioned to engage the springextension on opposite sides thereof so that on rotation of the spindlethe extension is formed into a hook, arid means for actuating saidspindle.

11. In a structure of the class described, the combination of a supportmember operativelv associated with said work holder, a carriage mountedto reciprocate above said support member, a forming spindle mounted onsaid carriage and provided with a head having pins thereon, one of whichis disposed centrally relative to the axis of the spindle and the othereccentrically relative t ereto to engage the spring extension whilesupported'by said support member so that mounted to reciprocate abovesaid support member, a forming spindle mounted on said carriage andprovided with a head having pins thereon, one of which is disposedcentrally relative to the axis of the spindle and the othereccentrically relative thereto, to engage the spring extension whilesupported by said support member so that upon the rotation of thespindlethe extension is bent into a hook, said support member having a holetherein adapted to receive the central pin, and means for actuatingsaidspindle.

13. In a structure of the class described, the combination of a workholder adapted to receive a spring having an end extension, a supportmember, a carriage mounted to reciprocate above said support member, aforming spindle mounted on said carriage and provided with a head havingpins thereon, one of which is disposed centrally relative to the axis ofthe spindle and the other eccentrically relative thereto, to engage thespring extension while supported by said support member so that upon therotation of the spindle the extension is bent into a hook, and means foractuating said spindle. 4

14. In a structure of the class described,

the combination of a work holder adapted to receive a spring having anend extension, a support member, a centering plunger for thespringextension adapted to engage the first coil of a spring arranged inthe work holder, a carriage mounted to reciprocate above said supportmember, a forming spindle mounted on said carriage and provided with ahead having pins thereon, one of which is disposed centrally relative tothe axis of the spindle and the other eccentrically relative thereto, toengage the spring extension while supported by said support member sothat upon the rotation of the spindle the extension is bent into ahook,and means for actuating said spindle.

15. In a structure of the class described,- the combination of a workholder, a support member, the rear edge of which constitutes a shearmember, a carriage mounted to reciprocate above said support member, ablade on said carriage coacting with'the shear portion of said supportmember, a forming v thereon,

spindle other eccentrically relative thereto, and

means for reciprocating said carriage and rotating said spindle.

16. In a structure of the class described, the combination of a workholder adapted to receive a spring having an end extension, a supportmember disposed at the end' of said work holder so that the springextension overlies the same, a carriage mounted to reciprocate abovesaid support member, a forming spindle provided with a head having pmsthereon, one of, which is disposed centrally relative to the axis of theblade and the other eccentrically relative thereto, and means forreciprocating said carria e and rotating said spindle.

17. n a structure of the class described, the combination of a workholder, a support member, a carriage mounted to reciprocate above saidsupport member, a forming spindle provided with a head having pinsthereon, one of which is disposed centrally rela tive to the axis of theblade'and the other eccentrically relative thereto, said support memberhaving a hole therein adapted to receive the central pin, and means forreciprocating said carriage and rotating said spindle.

18. In a structure of the class described,

the combination of a holder adapted to receive a coiled spring havin anend extension, there being a former lock positioned to support saidextension, a slide reciprocating at the side of said work holder, aformer member supported to reci rocate diagonally relative to the pathof said slide and having a work engaging finger adapted to project oversaid holder to enga e the extension and bend the same aroun said formerblock thereon, said former member having a transverse slot in the underside thereof, and a roller on said slide coacting with said oove in saidformer member whereby sald former member is actuated by thereclprocation of.said slide.

19. In a structure of the class described, the combination of a holderada ted to receive a coiled spring havin a ateral end extension, aformer block isposed at the end of said holder, and a reciprocatingformer member adapted to engage said extension, said former member beingarranged to reciprocate in a ath diagonal to the sprin extension where ythe same is bent around said former block into alignment with thespring.

20. In a structure of the class described, the combination with a workholder, of a slide disposed to reciprocate at the side ther'eof, a sprinr adjustin the opposlte direction, a mem for actuating the slide in. onedirection, a ever for actuatingesaid slide abl mounted on said slide tocoact with sai lever, and adjustable stop for said; slide, a formermember adapted to coact with the work supported in said holder, a waysupporting said former member for reciprocating movement in a pathdiagonal relative to the path of saidslide,-said former member having atransverse groove in its under-side, and a cam for actuating said leverand holding it in its actuated position for a predetermined period.

21. In a structure of the class described, the combination with a workholder, of a slide disposed to reciprocate at the side thereof, a springfor actuating the slide in one direction, a lever for actuating saidslide in the opposite direction, a former member adapted to coact withthe work supported in said holder, a way supporting said former memberfor reciprocating movement in a path diagonal relative to the path ofsaid slide, said former member having a trans verse groove in itsunderside, and a cam foractuating said lever and holding it in itsactuated position for a pre termined period.

22. In a structure of the class described,

the combination of a bed having a groove in the face thereof, a workholder secured in said groove by means of a screw arranged through thebed from the bottom prising a screw arranged through an elongated holein said bed, a carriage supportmg rear of said support member, means foradjustably securlng said bracket comprising a screw disposed in anelongated hole in said bed member, a carriage mounted on said bracket toreciprocate above said support member, a former member carried by saidcarriage and adapted to act upon the work supported by said supportmember, means for reciprocating said carriage comprising a bell cranklever pivotally mounted on said bracket, an adjustable abutment for saidlever onsaid'carriage, a pivoted actuating lever, an actuating camtherefor. an adjustable link connecting said bell crank lever to saidactuating lever, and a spring for retracting said bell crank lever.

23. In a structure of the class described, the combination of a workholder, a sup port member, a carriage reciprocating above saidsupportmember, a former member carried by said carriage and adapted toact upon the work supported by said support member, means forreciprocating said carriage comprising a bell crank lever pivotally'mounted on said bracket, an adjustable abutment for said lever on saidcarriage, a pivoted actuating lever, an actuating cam therefor, anadjustable link conbracket disposed in said groove at the" necting saidbell crank lever to said actu-- ating lever, and a spring for retractingsaid carriage. Y

24. In a structure of the classdescribed, the combination of aworkholder, a. sup port member,- a carriage reciprocating above said supportmember, a former-member carried by said carriagev and adapted to actupon the work supported bysaid support member, means for reciprocatingsaid carriage comprising a bell. crank lever pivotally mounted on saidbracket, a pivoted actuating lever, an actuating cam therefor, a linkconnecting said bell crank lever to said actuating lever, and a springfor retracting said carriage.

25. In a structure of the class described, the combination of a Workholder having a seat adapted to receive a coiled spring having anextension at the end thereof, a forming plunger adapted to engage thecoil of the spring terminating the said extension, a head on saidplunger provided with laterally projecting pins, a rock lever forked toembrace said head and slotted to engage said pins,,a supporting shaftfor said rock lever having eccentric pins at its end whereby thesupporting shaft may be adjusted to adjust the position of the lever, anactuating cam for said lever, a work clamp slidably mounted on saidplunger and provided with a stem, a spring mounted on said stem, and anadjusting member for said spring having a longitudinal bore for saidstem, said ad usting member being threaded in said head whereby thetension of the spring may be regulated and said work clamp is slidablysupported.

26. In a structure of the class described, the combination of a workholder having a seat adapted to receive a coiled spring having anextension at the end thereof,'a forming plunger adapted to engage thecoil of the spring terminating the said extension, a head on saidplunger provided with laterally projecting pins, a rock lever forked toembrace said head and slotted to engage said pins, an actuating cam forsaid lever, a work clamp slidably mounted on said plunger and providedwith a stem, a spring mounted on said stem, and an adjusting member forsaid spring having a longitudinal bore for said stem, said adjustingmember being threaded in said head where by the tension of the springmay be regulated and said Work clamp is slidably supported.

27. In a structure of the class described, the combination of a workholder having a seat adapted to receive a coiled spring having anextension at the end thereof, a form ing plunger adapted to engage thecoil of the spring terminating the said extension, 3 head on saidplunger provided with laterally projecting pins, a rock lever forked toembrace said head and slotted to engage said pins, a supporting shaftfor said rock lever having eccentric pins at its end whereby the'supporting'shaft may be adjusted to adjust the position of the lever,and an actuating cam for saidlever.

28.- In a structure of the class described, the combination of a workholder adapted to receive a spring having an end extension, said holderhaving a seat with transverse coil receiving grooves, a support for saidend extension, a vertically reciprocating plunger forming member adaptedto engage the first coil of the spring supported in the work holder tocenter the extension diametrically of the coil, and a work clampyieldingly mounted on said plunger to clamp the Work prior to theoperation of said plunger thereon.

29. In a structure of the class described, the combination of a workholder adapted to receive a spring having an end extension, a supportfor said extension, and a vertically reciprocating plunger formingmember adapted to engage the first coil of the spring supported in thework holder to cenlter the extension diametrically of the col 30. In astructure of the class described, the combination of a work holderadapted to receive a spring having an end extension extending laterallyof the spring, means for centering said extension diametrically of thespring, means for bending said extension to a longitudinal positionrelative to the spring, means for cutting said extension to the desiredlength, means for bending the extension into a hook, and means forsuccessively and automatically actuating the said several forming means.

31. In a structure of the class described, the combination of a Workholder adapted to receive a spring having an end extension extendinglaterally of the spring, a support for said end extension, means forcentering said extension diametrically of the spring, means for bendingsai% extension to a longitudinal position relative o the spring, meansfor bending the extension into a hook, and means for successively andautomatically actuating the said several formthe combination of a workholder adapted to receive a coiled spring having an end extensionextending laterally of the. spring, a support for said end extension,means for centering saidv extension diametrically of the spring, meansfor bending said extension to a longitudinal position relative to thespring, and means for bending the extension into a hook, said severalmeans being operatively associated to act on the-spring while it issupported in said work holder.

34. In a structure of the class described,

the combination of a work holder adapted to receive a coiled springhaving an end extension extending laterally of the spring, means forbending said extension to a longitudinal position relative to thespring, means for cutting said extension to the desired length, andmeans for bending the extension into a hook, said several means beingoper-' atively associated to act on the spring while it is supported insaid work holder.

35. In a structure of the class described, the combination of a workholder adapted to receive a coiled spring having an end extensionextending laterally of the spring, a support for said end extension,means for bending said extension to a longitudinal position relative tothe spring, and means for bending the extension into a hook, said sev:eral means-being operatively associated to act on the spring while it issupported in said workholder.

36. In a structure of the class described, the combination of a Workholder adapted to receive a coiled spring having an end extension, meansfor centering said extension, means for cuttingsaid extension to thedesired length, and means for bending the extension into a hook, saidseveral means being operatively associated to successively act on thespring while it is supported in said holder.

37. In a structure of the class described, the combination of a workliolder adapted to receive a spring having an end extension, arelatively fixed former block adapted to support'the' spring extension,av coacting former member adapted to bend the spring extension aroundsaid former block, and means for bending said extension into a hookwhile supported by said former block and former member.

38. Ina structure of the class described, the combination of a workholder adapted to receive a spring having a laterally projecting endextension, said holder having a seat isposed at an angle relative to thelongitudinal plane of the machine and being provided with a former blockaround which the extension may be bent while supported in said seat to aposition in a longitudinal plane of the machine, and means for formingsuch extension into a hook while the same is supported in such positionwhereby when the spring is removed from the holder, the hook extensionwill assume aposition parallel to the longitudinal axis of the spring.

In'witness whereof, I have hereunto set my hand and seal.

BE T 72L. VAN AORMAN. 1; 5.

